geography

2. an underground water supply consisting of a layer of rock
6. is a human-made barrier that juts on from a beach into the water
7. is the removal of trees and other plants
9. ability for humans to access the things they need to live happily
12. responsible and sustainable tourism which involves travel
13. statistical data of a population or specific groups of
16. an area of Earth that is home to similar plant and animal species
19. a method of destroying or burying rubbish
20. a place on earth and all the tings, both animate and inanimate, that are there
21. term used to describe shared characteristics of a population or group

1. a curved buildup of eroded material that forms at the mouth of a river
3. the dying out and complete disapearence of a species
4. describes land and climate conditions
5. a person who travels to many countries seeking safety from disaster or prosecution
8. a complex community made up of living organisms that all interact
10. wearing the earth's surface by natural elements
11. a biome of widespread land where grasses dominate vegetation
14. watering of dry land by artificial means (pipes, sprinklers)
15. laying down of solid material that has been eroded
17. the place or junction where two rivers meet
18. all of the gases that surround the earth